Updated Xcode Cloud flutter version to stable release of 3.16.0

open_earable/ios/ci_scripts/ci_post_clone.sh

@@ -3,13 +3,18 @@
 # Fail this script if any subcommand fails.
 set -e
 
+FLUTTER_URL="https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.16.0-stable.tar.xz"
+FLUTTER_DIR="$HOME/flutter"
+
 # by default, the execution directory of this script is the ci_scripts directory
 # CI_WORKSPACE is the directory of your cloned repo
 echo "🟩 Navigate from ($PWD) to ($CI_WORKSPACE_PATH)"
 cd $CI_WORKSPACE_PATH
 
 echo "🟩 Install Flutter"
-time git clone https://github.com/flutter/flutter.git -b flutter-3.16-candidate.22 $HOME/flutter
+mkdir -p $FLUTTER_DIR
+time curl -L $FLUTTER_URL -o /tmp/flutter.tar.xz
+time tar -xf /tmp/flutter.tar.xz -C $FLUTTER_DIR --strip-components=1
 export PATH="$PATH:$HOME/flutter/bin"
 
 echo "🟩 Flutter Precache"
@@ -25,7 +30,7 @@ echo "🟩 Install CocoaPods via Homebrew"
 time HOMEBREW_NO_AUTO_UPDATE=1 brew install cocoapods
 
 echo "🟩 build iOS"
-flutter build ios --release --no-codesign
+time flutter build ios --release --no-codesign
 
 echo "🟩 Install CocoaPods dependencies..."
 time cd ios && pod install